diff --git a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
--- a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
@@ -359,8 +359,17 @@
   // The emitter containing all of the locally emitted verification functions.
   const StaticVerifierFunctionEmitter &staticVerifierEmitter;
 };
+
 } // end anonymous namespace
 
+// Escape a string using C++ encoding. E.g. foo"bar -> foo\x22bar.
+static std::string escapeString(StringRef value) {
+  std::string ret;
+  llvm::raw_string_ostream os(ret);
+  llvm::printEscapedString(value, os);
+  return os.str();
+}
+
 // Populate the format context `ctx` with substitutions of attributes, operands
 // and results.
 // - attrGet corresponds to the name of the function to call to get value of
@@ -464,7 +473,7 @@
     body << tgfmt("    if (!($0)) return $1\"attribute '$2' "
                   "failed to satisfy constraint: $3\");\n",
                   /*ctx=*/nullptr, tgfmt(condition, &ctx.withSelf(varName)),
-                  emitErrorPrefix, attrName, attr.getSummary());
+                  emitErrorPrefix, attrName, escapeString(attr.getSummary()));
     if (allowMissingAttr)
       body << "  }\n";
     body << "  }\n";